"As a mother and the organization's newest ambassador, I am grateful to Free the Children for giving me the opportunity to channel my passion and love of children into meaningful action that furthers the education and leadership of young women for years to come," Portman said in a statement released today. "I hope others join me in supporting this important cause."

It was also announced that Portman has partnered with Dior—she's currently the face of the brand's Miss Dior Cherie fragrance campaign—with proceeds from the sale of the company's newest Rouge Dior lipstick to go to Free the Children in support of its Scholarships for Girls' Secondary Education in Kenya program.